| Presentation | 2021-06-24 A Study on Gaussian Belief Propagation Detector for High-Dimensional OTFS Modulation Yuya Ito, Shinsuke Ibi, Takumi Takahashi, Hisato Iwai, Noboru Osawa, Kosuke Yamazaki, Yoji Kishi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a demodulation (detection) scheme via Gaussian belief propagation (GaBP) for orthogonal time frequency space (OTFS) signals. In high-speed mobile environments, orthogonal frequency division multiplexing (OFDM) suffers from Doppler shift effects, resulting in unstable link quality. OTFS is a one of promising transmission methods that can deal with time fluctuation induced by different Doppler shift in the delayed-Doppler domain channel that has different delay and Doppler frequencies in each multipath component. However, the typical equalization of OFTS signals based on linear minimum mean square error (MMSE) requires high-dimensional inverse matrix operations based on channel matrices. To avoid the high computational burden, we propose GaBP-aided equalization on the basis of the multi-dimensional linear regression model of OTFS signals. Simulation results demonstrate the validity of the proposed OTFS-GaBP scheme under high-speed mobile environments in terms of the bit error rate (BER) performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OTFS / OFDM / Gaussian belief propagation / equalization / doubly selective fading |
| Paper # | RCS2021-54 |
| Date of Issue | 2021-06-16 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2021/6/23(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Fumihide Kojima(NICT) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Fumihide Kojima(Panasonic) / Toshihiko Nishimura(NEC) / Tomoya Tandai |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Gaussian Belief Propagation Detector for High-Dimensional OTFS Modulation |
| Sub Title (in English) | |
| Keyword(1) | OTFS |
| Keyword(2) | OFDM |
| Keyword(3) | Gaussian belief propagation |
| Keyword(4) | equalization |
| Keyword(5) | doubly selective fading |
| 1st Author's Name | Yuya Ito |
| 1st Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 2nd Author's Name | Shinsuke Ibi |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 3rd Author's Name | Takumi Takahashi |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| 4th Author's Name | Hisato Iwai |
| 4th Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 5th Author's Name | Noboru Osawa |
| 5th Author's Affiliation | KDDI Research, Inc.(KDDI Research) |
| 6th Author's Name | Kosuke Yamazaki |
| 6th Author's Affiliation | KDDI Research, Inc.(KDDI Research) |
| 7th Author's Name | Yoji Kishi |
| 7th Author's Affiliation | KDDI Research, Inc.(KDDI Research) |
| Date | 2021-06-24 |
| Paper # | RCS2021-54 |
| Volume (vol) | vol.121 |
| Number (no) | RCS-72 |
| Page | pp.pp.151-156(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-06-16 (RCS) |